Jan 19 (Reuters) - The S&P 500 confirmed on Friday that it has been in a bull market since October 2022, as it notched a record high close for the first time in two years.

The session's gains were fueled by chipmakers surging on AI optimism and investor bets that the Federal Reserve will cut interest rates in 2024.

The benchmark's new record high close confirms that the S&P 500 ended a bear market when it closed on Oct. 12, 2022, and that it has been in a bull market since then, according to one measure.

The S&P 500 had lost nearly 25% in a sell off between its last record high on January 3 2022 and its low in October 2022.

On Friday, S&P 500 climbed 1.2% on the day to end at 4,839.81 points, exceeding its previous record close of 4796.56 on Jan. 3, 2022. (Reporting by Noel Randewich, Sinéad Carew)